blois-2003
blois-2003 blois-2003
eventsCentral and Double-Gap Results√s=1800 GeV10 5 DATADD + non-DD MCnon-DD MC10 410 310 2100 1 2 3 4 5 6 7Differential shapes agree with Regge predictionsevents10 5 √s=1800 GeVDATASDD + SD MC10 4SD MC10 310 20 1 2 3 4 5 6 7Number of Events per ∆logξ = 0.1( GeV 2 )CDF Preliminary2M X 10 5DPE MCSD MC10 4 DPE+SD MC10 310 2 √s ⎯ = 1800 GeV0.035 ≤ ξ- p ≤ 0.095| t- p | ≤ 1.0 GeV2101 10 10 2 10 3 10 4 10 5 10 6DataDD SDD DPE∆η 0 =η max-η min∆η 0 exp =η max -η minξ p Xσ DD(mb) for ∆η > 3.0101# One-gap cross sections require renormalizationCDFUA5 (adjusted)ReggeRenormalized gap# Two-gap/one-gap ratios are ≈ κ =≈ 0. 17gap fraction ∆η > 3.0110 -1CDF: one-gap/no-gapCDF: two-gap/one-gapRegge predictionRenorm-gap prediction2-gap1-gapFraction of Events with ξ p< 0.020.50.40.30.20.1CDF Data: DPE/SD ratio (Preliminary)Regge + FactorizationGap Probability Renorm.Pomeron Flux Renom.10 2 10 10 2 10 3√s (GeV)21010 3sub-energy √s --, (GeV)010 3 √s ⎯ (GeV)
Soft Double Pomeron Exchange# Roman Pot triggered eventsPreliminary10 9 10 -6 10 -5 10 -4 10 -3 10 -2 10 -1 1# 0.035 < ξ-pbar < 0.095|t-pbar| < 1 GeV 2# ξ-proton measured usingξp1= ∑sEall particlesiT⋅e# Data compared to MC basedon Pomeron exchange withηi( 1 / ξ ) × Number of Events per ∆logξ = 0.110 810 710 610 5√s ⎯ = 1800 GeVCDF0.035 ≤ ξ-p ≤ 0.095| t- | ≤ 1.0 GeV2pDataDPE MCSD MCDPE+SD MCPomeron intercept ε=0.1ξ p X# Good agreement over the entire kinematic region (4 orders of magnitude!)
- Page 1 and 2: Soft and Hard Diffraction at CDFKon
- Page 3 and 4: "rapidity gaps are regions of rapid
- Page 5 and 6: ! Elastic scattering! Total cross s
- Page 7 and 8: Soft Single Diffraction Datap( p) +
- Page 9: Two-Gap Diffraction (hep-ph/0205141
- Page 14 and 15: Diffractive Dijets with Leading Ant
- Page 16 and 17: Dijets in Double Pomeron ExchangeTe
- Page 18 and 19: Run II Forward Detector Layout
- Page 20 and 21: J5RP inclusiveRP+J5RP+J5+BSC-GAP_pR
- Page 22 and 23: Diffractive Dijet Structure Functio
- Page 24 and 25: Data SelectionDPE: RP+J5+BSC_GAP_pS
- Page 26 and 27: Inclusive/Exclusive DPE Dijet Predi
- Page 28 and 29: Run II: Exclusive DPE Dijets ?No ex
- Page 30: SUMMARYSoft and hard conclusions$ S
Soft Double Pomeron Exchange# Roman Pot triggered eventsPreliminary10 9 10 -6 10 -5 10 -4 10 -3 10 -2 10 -1 1# 0.035 < ξ-pbar < 0.095|t-pbar| < 1 GeV 2# ξ-proton measured usingξp1= ∑sEall particlesiT⋅e# Data compared to MC basedon Pomeron exchange withηi( 1 / ξ ) × Number of Events per ∆logξ = 0.110 810 710 610 5√s ⎯ = 1800 GeVCDF0.035 ≤ ξ-p ≤ 0.095| t- | ≤ 1.0 GeV2pDataDPE MCSD MCDPE+SD MCPomeron intercept ε=0.1ξ p X# Good agreement over the entire kinematic region (4 orders of magnitude!)
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